书城教材教辅科学读本(英文原版)(套装1-6册)
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第225章 第三册(50)

"Fowls, pigeons, turkeys, pheasants, and partridges all find their food by scratching in the ground. They are all scratchers.""Teacher showed us a picture," said Will, "of a bird with extremely long, slender legs and feet. The legs are so long that the bird looks as if it were on stilts. Teacher pointed out to us the long, sharp, pointed bill, and we saw at once that this must be one of the fishing birds. The sharp bill is meant to catch fish.

"These birds always live near the water. Indeed, they walk or wade in the water in search of their prey. We call them waders. Their long stilt-like legs are for this very purpose, and their long necks are to enable them to strike at their prey in the water.